<template>
	<view class="content"></view>
</template>

<script>
var main, receiver, filter;
var _codeQueryTag = false;
export default {
	data() {
		return {
			scanCode: ''
		};
	},
	created: function(option) {
		this.initScan();
		this.startScan();
	},
	onHide: function() {
		this.stopScan();
	},
	destroyed: function() {
		/*页面退出时一定要卸载监听,否则下次进来时会重复，造成扫一次出2个以上的结果*/
		this.stopScan();
	},
	methods: {
		initScan() {
			let _this = this;
			main = plus.android.runtimeMainActivity(); //获取activity
			var IntentFilter = plus.android.importClass('android.content.IntentFilter');
			filter = new IntentFilter();
			filter.addAction('android.intent.ACTION_DECODE_DATA'); // 换你的广播动作
			receiver = plus.android.implements('io.dcloud.feature.internal.reflect.BroadcastReceiver', {
				onReceive: function(context, intent) {
					plus.android.importClass(intent);
					let code = intent.getStringExtra('barcode_string'); // 换你的广播标签
					_this.queryCode(code);
				}
			});
		},
		startScan() {
			main.registerReceiver(receiver, filter);
		},
		stopScan() {
			main.unregisterReceiver(receiver);
		},
		queryCode: function(code) {
			//防重复
			if (_codeQueryTag) return false;
			_codeQueryTag = true;
			setTimeout(function() {
				_codeQueryTag = false;
			}, 150);
			var id = code;
			uni.$emit('scancodedate', { code: id });
		}
	}
};
</script>

<style>
page {
	background-color: #efeff4;
}
.content {
	text-align: center;
}
</style>
